Fluid-thrown valve.



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` Patented lune I2, |900.

w w CUBEY 1n FLUID THRowN VALVE.

rNrrnn STATES WILLIAM \V. OOREY, JR.,

OF ST. vLOUIS, MISSOURI.

FLplD-THROWN VALVE.

SPECIFICATION forming part of Letters PatentNO. 651,543, dated June 12, 1900.

Application led January l5, 1900. Serial No. 1,513. (No model.)

T0 @ZZ whom it may concern:

Beitknown that LWILLIAM W. COREY, Jr. acitizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Fluid-Thrown Valves, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accom-v panying drawings, forming part of this speci- Iication, in which Figure l is a longitudinal sectional View illustrating my improved Huid-thrown valve as used in connection with a steam-pump. Fig. 2 is a top plan View, partly in section, showing the valve-casing removed. Fig. 3 is a bottom plan view of the valve. Fig. 4 is a sectional view on line 4 4, Fig. 3. Figs. 5, 6, and 7 are cross-sectional views through the valve and its casing. Fig. 8 is a horizontal sectional view through the valve and its casing. Fig. 9 is a sectional view on line 9 9, Fig. l. Fig. 10 is aplan View of a modified form of the valve-rod-actuating mechanism. Fig. 1l is an end elevational view of the same, partly in section. l v

This invention relates to a new and useful improvement in fluid-thrown valvesfor engines, and is designed particularly for use on engines in steam-pumps, although it is obvious .that the valve mechanism hereinafter described can be used in connection with other forms of engines.

The objects of my present invention are to simplify the construction of the valve mechanism by reducing the number of parts and making said parts more durable, at the same time cheapening the cost of manufacture.

With these objects in view the invention consists in the construction, arrangement, and combination of the several parts, all as will hereinafter be described and afterward pointed out in the claims.

In the drawings, A indicates the cylinder of a steam-engine, B the piston, and O the rod thereof. Ports l and 2 lead to the ends of the cylinder and are the inlet-ports, While ports 3 and 4 lead from the cylinder near the ends thereof, said ports l, 2, 3, and 4 having registration with properly located ports in the valve-casing which terminate in the bore thereof, in which is arranged the main valve of the engine. l

D indicates the valve-casing to which I have referred, whose ends are preferably closed by caps or heads, and E a cylindrical valve mounted in a corresponding bore in said casing, the top part of said valve being yc ut away, as at e, to receive the motive fluid entering at CZ. ValveE has on its underside suitable ports for coperating with the ports or passages l, 2, 3, and 4, said 'valve-ports being designated as l, 2a, 3, and 4, re-

'spectively ufacture I arrange in the end walls f' a rod or bar F, which is preferably longitudinally disposedv and fits in the bifurcated ends of a rock arm or lever G, mounted upon a rockshaft H. In the drawings this rock-shaft is shown as terminating within the exhaust chamber or passage 5; but it is obvious that said rock-shaft can extend through and bcyond said passage and have abearingon the opposite side thereof, and, furthermore, instead of being mounted in the cylinder, as shown in the drawings, immediately under the valve casing, said rock shaftcan be mounted in the valve-casing and to one side of a vertical line drawn through the center thereof. Shaft H carries a cam frame I, shown in Figs. 1, 2,and 9, as being provided with a slot having cam-faces at opposite ends thereof,while the cross-head J, fixedly mounted on the piston-rod C, has a. projection carrying a rollerjvhich passes through the camslot, said projection being provided with an eye in its upper end to embrace and slide on the rock-shaft H. In Figs. 10 and ll I have shown a slightly -modified mechanism for rocking the shaft H,which consists in mount'- ing a cam-frame I thereon with cam-faces at its side edges, with which cam-faces'copcrate rollers q7" on a cross-head J fixedlymounted on the piston-rod C.

The valve-casing D is provided with chambers G and 7 in its side Walls, (see Figs. 5 to 8,) which are in constant communication with the steam-space e, said chambers G and 7 being preferably arranged diagonally opposite each other, as shown in Fig. 8, While I have shown these chambers G and 7 in the drawings as arranged diagonally opposite each other, it is obvious that they can be extended the entire length of the cylinder Within the limits of the inner movements of the valve, and, furthermore, they can extend up so that the enlargement would extend practieall y over the entire upper face of the valve Within the limits of its inner movements. In this arrangement, of course, the end walls of the chambers would never communicate With the ends of the valve-ehamber except through the ports G and 71. The bottom walls of the chamber would occupy substan tially the same relative positions as shown in Fig. 5'. The valve E is provided in its sides with grooves 6 and 7, leading to opposite ends of the valve and terminating at their inner ends approximately about midway the length of said valve. These grooves o and 7 form ports or passages to admit and exhaust pressure to and from the ends of the valve, and they cooperate, respectively, with the chambers G and 7 and the exhaust-space 5.

The operation of my improved fluid-thrown valve is as follows: The parts being in the position shown in Fig. l and steam being admitted through openings d and to the hollow portion of the valve and also to the chambers 6 and 7 Will pass first through port l and then through port 3 to the inner end of cylinder A and force the piston B to the left, any pressure in frontl of said piston escaping through ports et and 5, port 2 being blinded by the valve E. As the piston moves to the left cross-head J is carried with it, and as soon as the projection on said cross-head strikes the cam-face on the inner end of the frame I said frame is rocked and with it the shaft II, so that the main valve, by reason of the rock-arm G, is oscillated or has imparted thereto a rotary movement sufficient to carry the port 6, heretofore in registration With the chamber G, out of registration with the said chamber 6 and into registration with the eX- haust-space 5, at the same time carrying port 7 out of registration with the exhaust-chamber 5` and into registration with the chamber 7. The pressure is now admitted to the left end of the valve and the same thrown to the right end of its chamber. In order to cushion the valve in this movement, the grooves 6u and 7 terminate at their inner ends at such points that when steam is admitted to either end of the valve said valve will be moved in the proper direction; but before completing its movement passage G"L or 7, initially in registration with the exhaust-passage 5, pass out of registration, so that a cushion is provided in advance of the moving valve.` The amount of pressure left in the ends of the valve-chamber to cushion the valve in its two longitudinal movements is determined by the point of termination of the grooves 6 and 7. The valve having been moved from left to right the exhaust-passage 3 is placed in communication with the passage 5, and the ports 2 and 4f register with the ports 2 and 4, so as to admit pressure to the left end of the cylinder A to move the piston B toward the right. As the cross-head .I moves from left to right it comes in contact with the cam-face on the rocking frame I when nearing the completion of said move- `ment and rocks the shaft II and its carried arm G in the opposite direction, so as to throw the passage 6 out of` registration with the exhaust-passage 5 and into registration with the chamber 6 and the passage 7 out of registration with the chamber 7 and into registration with the exhaust-passage 5. The

valve E nonr moves from right to left under the impulse ot' the motive Huid admitted through the passage G to the right end thereof, while the pressure at the left-hand end of the valve is exhausted through the passage 7 until said passage passes out of registration with the exhaust-passage 5 to cushion the valve in this movement.

From the above it will be seen that means are provided operating at right angles or transversely to the line of movement of the valve E to admit and exhaust pressure to and from the ends of said valve to throw the same, said valve being cushioned at the extremity of each movement. Further1nore,.

the time for oscillating said valve in order to accomplish its throw by pressure is positively under the control of the posi'tion of the piston B and its connected cross-head.

I am aware that minor changes in the arrangement, construction, and combination of several parts of my device can be made and substituted for those herein shown and dcscribed Without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The combination with a longitudinallymovable valve, of a rock-arm cooperating therewith, said rock-arm being arranged externally, and moving transversely the direction of movement of said valve for eilecting the admission and exhaust of motive fluid to and lfrom the ends ofsaid valve; substantially as described.

2. The combination with a longitudinallymovable fluid-thrown valve, of a rock-arm operating at right angles to the direction ol movement of said valve for effecting the admission and exhaust of pressure to and from the ends of said valve; substantially as described.

The combination with acylindrical fluidthrown valve, of a directly-connected rockarm for Voscillating said valve to admit and exhaust pressure to and from its ends said rock arm being arranged externally said IOC) IOS

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valve, and having its free end projecting into a pocket in said valve; substantially as described.

4. The combination with a hollow, cylindrical valve provided with an inclosed portion midway its length, of a rod or bar bridging said inclosed portion, and a rock-arm cooperating with said rod or bar to eifect the admission and exhaust of motive fluid to and from the ends of the valve; substantially as described.

5. The combination with a hollow, cylindrical valve having closed ends, and an inclosed portion midway the length of said valve, of a direct1y-connected rock-arm for oscillating said valve,an open-ended groove in the periphery of said valve designed to pass into and out ot' registration with inlet and exhaust ports to admit and exhaust pressure to and from the ends of said valve to throw the same When said valve is oscillated; substantially as described.

G. The combination with a valve -casing formed with chambers 6 and 7 which are constantly supplied with motive iiuid, and an exhaust-passage 5, of a cylindrical valve provided with ports 6a and 7ft designed to register with the chambers 6 and 7 respectively, and the exhaust-passage 5, and means for rotating the valve when the same is in difterent positions for causing the passages 6a and 7 a, to pass into or out of registration With 'the chambers 6 and 7 respectively, orinto or out of registration with the exhaust-passage 5; substantially as described.

7. The combinaton With a valve-casing provided with chambers in constant communication with the motive tluid, an exhaustpassage intermediate said chambers, of a cylindrical valve provided with grooves in its periphery, said grooves terminating approximately midway the length of the valve, and means for partially rotating said valve; substantially as described.

S. The combination With` a duid-thrown valve, of a directly-connected rock-arm arranged externally at right angles to the direction of movement of the valve for partially rotating said valve, a rock-shaft on which said arm is mounted, a piston-rod, and means on said piston-rod for rocking said shaft; substantially as described.

9. The combination with an engine-cylinder, its piston and piston-rod, of a valve-casing, a fluid-thrown valve in said casing, a rockarm moving at right angles to the direction of travel of said duid-thrown valve for effecting the admission and exhaust of motive Huid to and from the ends thereof, and means connected with the piston in the cylinder for rocking said arm. i

10. The combination with an engine-cylinder, its piston and piston-rod, of a valve-casing, a fluid-thrown valve in said casing, a rock-arm for partially rotating said valve, said rock-arm moving at right angles to the direction of travel ot' said duid-thrown valve for effecting the admission and exhaust of motive tluid to and from the ends thereof, a rock-shaft on which said arm is mounted, a cani arranged on said'rock-shaft, and means on the pistonrod for coperating with said cam and rocking said shaft; substantially as described.

11. The combination lwith an engine-cylinder, its piston and piston-rod, of a valve-casing, a fluid-thrown valve in said casing, a rock-arm for partially rotating said valve, said rock-arm moving at right angles to the direction of travel of said duid-thrown valve for effecting the admission and exhaust of motive fluid to and .from the ends thereof, a cam-frame lixed to said rock-shaft, and a cross-head mounted on the piston-rod and sliding on the rock-shaft, for coperating with said cam-frame to rock said shaft; subl stantially as described.

12. The combination with an engine-cylinder, its piston and piston-rod, of a valve-casing, a fluid-thrown valve in said casing, a rock-arm for partially rotating said valve, said rock-arm moving at right angles to the direction of travel of said duid-thrown valve for effecting the admission and exhaust of motive iiuid to and from the ends thereof, a cam-frame iixed to said rock-shaft, and a cross-head mounted on the piston-rod and provided with rollers for coperating With both sides of said cam-frame to rock said shaft; substantially as described.

13. The combination with a duid-thrown valve, a rock-arm for partially rotating said valve, a rock-shaft onv which said arm is mounted, a double-faced cam I mounted on said rock-shaft, a piston-rod, and a cross-head mounted on said piston-rod and provided with rollers for coperating with each side of said cam 1'; substantially as described.

14. The combination with a valve-casing, of a fluid-thrown valve arranged therein, and means for partially rotating said valve for effecting the admission and exhaust of the motive fluid to and from the ends thereof, said valve being provided with grooves 6 and 7a at opposite ends in its periphery, which grooves terminate, at'theirinner ends, at such points that, when steam is admitted to either end of the valve, said valve will be moved in the proper direction, but before completing its movements, the passages 6a or 7 f, initially in registration with the exhaust-passage, pass out of registration to provide a cushion in advance ot the moving valve; substantially as described.

15. The combination with a valve-casing provided with live-iiuid chambers G and 7 in its side Walls, and an exhaust-passage in the bottom wall about midway its length, of a duid-thrown valve arranged in said casing,

means for partially rotating said valve for.

effecting the admission and exhaust of the motive fluid to and from its ends, and grooves IOO IIO-

G and 7* arranged in the periphery of the in order to provide cushions in advance of valve at opposite ends and on each side therethe moving valve substantially as described. of, the groove 6a establishing communication In testimony whereof I hereunto affix my between the chamber 6 and one end of the signature, in the presence of two Witnesses, 5 va1ve-chamber,While the groove7L establishes this 12th day of January, 1900.

communication between the other end of the f valve-chamber and the exhaust-passage, and VILLIAM W OOREX JR vice versa, said grooves being so placed that Witnesses: they pass out of registration with the exhaust- WVM. A. SCOTT,

1o passage before the valve completes its stroke A. S. GRAY. 

